Power Protection NPW800 / NPW800R
The NPW800 / NPW800R relays measure apparent (S), active (P) and reactive (Q) power of 3 or 4 wire electrical networks. 
These relays can also report network voltage, frequency, power factor and tanĪ†.

ANSI functions for NPW800 / NPW800R: 
27 / 32P / 32Q / 37P / 37Q / 59 / 59N / 74TC / 55 / 81U / 81O / 86 / BF

These relays are part of the NP800 range, offering multi-function protection and communication via Modbus (RS485) or Modbus TCP (Ethernet).  A full brochure is available on the NP800 range page